In the peace treaty after the spanish-american war, the united states received possession of what three areas?

Which factor contributed to the rise of african empires such as ghana and mali?

What does it mean to say that "service sector" jobs are predominant in europe's mixed economies today? a. that jobs where people work in factories predominate b. that jobs where people do something for others predominate c. that jobs where people work the land predominate d. that jobs in government predominate

What are the most populous and least populous areas of russia? and why are some areas more heavily populated than others?